Skip to content

Paramecium (slipper animal)

Paramecium spp. · Aquatic life

Paramecium (slipper animal): Under the microscope

Under the microscope · Photo: CC0

NativeProtozoan

Also called Slipper animalcule, Ciliate

How to identify Paramecium (slipper animal)

  • Microscopic slipper shaped cell about 0.05 to 0.3 mm
  • Covered in fine beating cilia; swims fast in spirals
  • Groove on one side leading to the mouth
  • Sometimes visible as tiny white specks in a jar of rich water

Similar species

Other ciliates are similar under low power; Stentor is trumpet shaped and Vorticella sits on a stalk.

Profile

SeasonAll year; most abundant in warm months.
DepthNear the bottom and in decaying material
How it spreads or reproducesCell division and mating; some form cysts
HabitatStill water rich in decaying organic matter: lagoons, manure affected ponds, ditches and leaf filled shallows.

Why it matters in a lake

Feeds on bacteria, so large numbers point to organic pollution or decaying material. Common in wastewater lagoons.

Where it is found

  • Idaho: Common
  • Oregon: Common
  • Wyoming: Common

Classification

KingdomChromista
PhylumCiliophora
ClassOligohymenophorea
OrderPeniculida
FamilyParameciidae
Scientific nameParamecium spp.

Need a hand?

Found it in your lake?

Send us a photo and we will identify it and tell you what it means for your lake.

Idaho / Wyoming (208) 501-4531Oregon (541) 280-0596